By using electro-erosive machining, we can produce complex and irregular shapes of a workpiece, holes with a small diameter, narrow slits, grooves and provide angled cutting at high precision without limitations on hardness of the material. Roughness of the machined surface is between Ra0,2 – Ra6. Dimensional accuracy achieved is between 0.02 – 0.002 mm. This technology can substitute grinding in cases where it would be otherwise technologically impossible.